It is tough. My wife and I have been developing our own system for growing our own vegetables and it is not as easy as one would think. Some seeds don’t germinate. Some plants become overtaken by insects or disease. Some take up too much room. Preparing the soil properly before– not after, the plants have matured. Is your plot large enough to sustain 1, 2+ people? Once the plants start producing is the harvest sufficient? For how long? What about when the weather starts turning cold? Where’s the water coming from? The list goes on and on. Good luck to those who head for the hills without the knowledge necessary to survive.